$(document).ready(function(){ 
    $("#NavBar_ddlMasterOperatorRegions").change(function(){$("#NavBar_ddlRegions").val(0);$("#NavBar_ddlVenues").val(0);$("#Leaderboard_ddlMasterEvents").val(0);postQuery();});
    $("#NavBar_ddlRegions").change(function(){$("#NavBar_ddlVenues").val(0);$("#Leaderboard_ddlMasterEvents").val(0);postQuery();});
    $("#NavBar_ddlEventTypes").change(function(){postQuery();});
    $("#NavBar_ddlVenues").change(function(){postQuery();});
    $("#Leaderboard_ddlMasterEvents").change(function(){postQuery();});
    $("#Leaderboard_ddlMultiEvents").change(function(){postQuery();});
});
function postQuery(){
    var qS = '?r='+$("#NavBar_ddlRegions").val()+'&v='+$("#NavBar_ddlVenues").val()+'&me='+$("#Leaderboard_ddlMasterEvents").val()+'&mo='+$("#NavBar_ddlMasterOperatorRegions").val()+'&et='+$("#NavBar_ddlEventTypes").val()+'&e='+$("#Leaderboard_ddlMultiEvents").val(); 
    document.location=qS;
}